1. When someone fucks something up, from being too clumsy
2. Someone who is just clumsy, stupid and cant help it.

1. When someone knocks over a glass cup along with their shisha and the coal - "oh my god!!! You had to Hoss it!!
2. Someone who is constantly clumsy - "Your such a Hoss!!"
3. When it happens towards yourself - "You know when you've been Hossed!!"